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公开(公告)号：EP2725702B1
公开(公告)日：2017-11-15
申请号：EP11868761.5
申请日：2011-06-27
发明人： ITO Masato , MOROHOSHI Toshio
CPC分类号： H02P21/146 , H02P6/185 , H02P6/186 , H02P21/18 , H02P21/32 , H02P2203/03
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公开(公告)号：EP2725702A1
公开(公告)日：2014-04-30
申请号：EP11868761.5
申请日：2011-06-27
发明人： ITO Masato , MOROHOSHI Toshio
IPC分类号： H02P6/08
CPC分类号： H02P21/146 , H02P6/185 , H02P6/186 , H02P21/18 , H02P21/32 , H02P2203/03
摘要： A storage section (5) stores, as stored current values, currents flowing when a voltage application section (3) applies voltage vectors to a three-phase rotary machine (1). A position estimation section (6) estimates the rotor position of the rotary machine (1) in a stopped state based on the stored current values. An adjustment section (7) adjusts a minimum necessary application time Ta that allows the rotary machine (1) to be magnetically saturated by voltage vector application, so as to enable rotor position estimation. Further, the adjustment section (7) uses, as an adjustment evaluation value, the magnitude |Δ Y| of differential admittance obtained by dividing a summed current value calculated from the stored current values by the voltage amplitude value of the voltage vector instruction when the voltage vector based on the voltage vector instruction is applied with the application time being set at an arbitrary application time Tm, and adjusts the application time based on |Δ Y|. Thus, evaluation of the degree of magnetic saturation can be more properly performed, and the minimum necessary application time setting value that allows estimation of the rotor position can be detected and set simply and reliably.
摘要翻译： 存储部（5）作为存储电流值存储当电压施加部（3）向三相旋转机（1）施加电压矢量时流动的电流。 基于所存储的当前值，位置估计部（6）将旋转机械（1）的转子位置估计为停止状态。 调整部（7）调整允许旋转机械（1）通过电压矢量施加磁饱和的最小必需施加时间Ta，以使得能够进行转子位置估计。 此外，调整部（7）使用幅度|“Y”作为调整评价值 通过将施加时间设定为任意的施加时间Tm而将基于所述电压矢量指令的电压矢量施加的电压矢量指令的电压振幅值除以由所存储的电流值计算出的合计电流值而得到的差分导纳 ，并根据| Y |调整应用时间。 因此，可以更适当地进行磁饱和度的评估，并且可以简单可靠地检测和设置允许估计转子位置的最小必需施加时间设定值。
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